When it comes to finding synonyms for the term "arch acoust", several alternatives can be considered. One possible synonym is "architectural sound design", which refers to the deliberate shaping and arrangement of acoustic factors in a building or space. Another term that can be used interchangeably is "architectural acoustics", which emphasizes the study and application of sound control within architectural spaces. "Acoustic architecture" can also be used, focusing on the integration of sound and space in the design process. These synonyms encapsulate the concept of incorporating acoustics into architectural structures, highlighting the significance of sound in the built environment.